| PASS Service worker test setup | |
| PASS Can construct a readable stream with a valid CountQueuingStrategy | |
| PASS Correctly governs a ReadableStreamController's desiredSize property (HWM = 0) | |
| PASS Correctly governs a ReadableStreamController's desiredSize property (HWM = 1) | |
| PASS Correctly governs a ReadableStreamController's desiredSize property (HWM = 4) | |